Adding socket.io client files.
Adding server computing for primes instance. Pay attention to the fact that only one client may be connected, as range
are not computed to be sufficiently low at beginning.
Merge pull request #1 from Aldream/master

Test n°2 - Workers & Files
Merge remote-tracking branch 'upstream/master'
<Res> Trying to figure out a good architecture.
<Res> Defining initialization methods of the Master.
<Res> No reason to stringify the job's data ...
<Res> Draft of a server answering the master.